Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Stability of structures01:14

Stability of structures

395
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
395
Static Equilibrium - II01:07

Static Equilibrium - II

9.7K
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
9.7K
Static Friction01:18

Static Friction

1.3K
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
1.3K
Electro-mechanical Systems01:19

Electro-mechanical Systems

1.5K
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.5K
Self-Locking Screw01:16

Self-Locking Screw

2.3K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.3K
Electrostatic Boundary Conditions01:16

Electrostatic Boundary Conditions

863
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
863

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Influence of variation in indium concentration and temperature on the threshold current density in In <sub></sub> Ga<sub>1-</sub> As/GaAs QD laser diodes.

Heliyon·2025
Same author

Out-of-Plane Continuous Electrostatic Micro-Power Generators.

Sensors (Basel, Switzerland)·2017
Same author

Patterns of resistance to antibiotics at king fahd hospital of the university.

Journal of family & community medicine·2012
Same author

Continuing pharmaceutical education for community pharmacists in the eastern province of saudi arabia.

Journal of family & community medicine·2012
Same author

Falls in elderly hemodialysis patients.

QJM : monthly journal of the Association of Physicians·2011
Same author

An unusual case of anti-glomerular basement membrane disease presenting with nephrotic syndrome.

International urology and nephrology·2010
Same journal

A tri-axis optomechanical accelerometer with plasmonic MIM waveguide and structural direction-dependent optical signatures.

Scientific reports·2026
Same journal

Holographic leaky-wave antennas with independently controlled multiple counter-rotating vortex beams.

Scientific reports·2026
Same journal

Differential associations of longitudinal hearing and vision trajectories with dementia and mild cognitive impairment in older adults.

Scientific reports·2026
Same journal

Abdominal obesity and leisure-time sedentary behavior in relation to gastroesophageal reflux disease risk: a prospective cohort study from the UK Biobank.

Scientific reports·2026
Same journal

Effect of nitrogen-rich COF incorporation on the structure and separation performance of polyamide nanofiltration membranes.

Scientific reports·2026
Same journal

Withanolide A inhibits hIAPP aggregation: An In silico, biophysical, and drosophila-based In vivo validation.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Dec 25, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K

Quasi-Static Pull-in: an Instability in Electrostatic Actuators.

M S Al-Ghamdi1, M E Khater2, E M Abdel-Rahman3

  • 1National Center for Electronics and Photonics, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia.

Scientific Reports
|March 21, 2020
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new electrostatic actuator instability called quasi-static pull-in. This phenomenon arises from a fast-slow dynamic interaction, leading to large oscillations and a Shilnikov bifurcation.

More Related Videos

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.7K
Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

2.0K

Related Experiment Videos

Last Updated: Dec 25, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K
Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.7K
Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

2.0K

Area of Science:

  • Microelectromechanical Systems (MEMS)
  • Nonlinear Dynamics
  • Actuator Technology

Background:

  • Electrostatic actuators are crucial components in micro-devices.
  • Understanding actuator stability is essential for reliable performance.
  • Existing models do not fully capture certain instability phenomena.

Purpose of the Study:

  • To identify and characterize a novel instability in electrostatic actuators.
  • To elucidate the underlying dynamic mechanisms of this instability.
  • To propose a new classification for pull-in instabilities.

Main Methods:

  • Experimental investigation of micro actuators in ambient air.
  • Analysis of fast-slow dynamic interactions.
  • Identification of Shilnikov bifurcations.

Main Results:

  • Experimental evidence of quasi-static pull-in instability was observed.
  • A fast-slow dynamic interaction between excitation and response was identified as the cause.
  • The instability leads to large non-resonant oscillatory orbits and Shilnikov bifurcations.

Conclusions:

  • Quasi-static pull-in represents a new class of electrostatic actuator instability.
  • The findings provide a deeper understanding of nonlinear dynamics in MEMS.
  • A revised taxonomy of pull-in instabilities is proposed based on these results.